/*
 * This file Copyright (c) 2015. Walle.
 * (http://www.wallellen.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the
 * Walle Agreement (WA) and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or WA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Walle Agreement (WA), this file
 * and the accompanying materials are made available under the
 * terms of the WA which accompanies this distribution, and
 * is available at http://www.wallellen.com/agreement.html
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 */

/**
 *
 */
package org.wltea.analyzer.lucene;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;

import java.io.Reader;

/**
 * 实现Lucene Analyzer
 * 基于IKTokenizer的中文分词器
 *
 * @author 林良益
 */
public final class IKAnalyzer extends Analyzer {

    private boolean isMaxWordLength = false;

    /**
     * IK分词器Lucene Analyzer接口实现类
     * 默认最细粒度切分算法
     */
    public IKAnalyzer() {
        this(false);
    }

    /**
     * IK分词器Lucene Analyzer接口实现类
     *
     * @param isMaxWordLength 当为true时，分词器进行最大词长切分
     */
    public IKAnalyzer(boolean isMaxWordLength) {
        super();
        this.setMaxWordLength(isMaxWordLength);
    }

    /* (non-Javadoc)
     * @see org.apache.lucene.analysis.Analyzer#tokenStream(java.lang.String, java.io.Reader)
     */
    @Override
    public TokenStream tokenStream(String fieldName, Reader reader) {
        return new IKTokenizer(reader, isMaxWordLength());
    }

    public void setMaxWordLength(boolean isMaxWordLength) {
        this.isMaxWordLength = isMaxWordLength;
    }

    public boolean isMaxWordLength() {
        return isMaxWordLength;
    }

}
